CN1989437A - Image forming apparatus having a plurality of laser scanner units - Google Patents
Image forming apparatus having a plurality of laser scanner units Download PDFInfo
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- CN1989437A CN1989437A CN 200580024336 CN200580024336A CN1989437A CN 1989437 A CN1989437 A CN 1989437A CN 200580024336 CN200580024336 CN 200580024336 CN 200580024336 A CN200580024336 A CN 200580024336A CN 1989437 A CN1989437 A CN 1989437A
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Abstract
An image forming device, characterized in that the shape of the optical path of a third laser beam from a third semiconductor laser (19M) to a third photo-sensitive member drum (1M) is approximately the same as that of the optical path of a first laser beam from a first semiconductor laser (19C) to a first photo-sensitive member drum (1C), a second virtual line connecting the rotating center of the third photo-sensitive member drum (1M) to the rotating center of a fourth photo-sensitive member drum (1K) is tilted relative to a first virtual line connecting the rotating center of the first photo-sensitive member drum (1C) to the rotating center of the second photo-sensitive member drum (1Y), and an angle formed by the rotating axis (x2) of a second rotating polygon mirror (20b) and the second virtual line (12) is equal to an angle formed by the rotating axis (x1) of a first rotating polygon mirror (20a) and the first virtual line (11).
Description
Technical field
The present invention relates to the image processing system that color copy machine, color printer etc. have a plurality of laser scan units.
Background technology
As the color copy machine that makes electricity consumption photorecording technology, color printer, the image processing system with 4 photoreceptors of tandem configuration is arranged.This tandem image processing system has that the recording medium that can use is more, also advantage faster of writing speed, becomes the main flow form that coloured image forms device in recent years gradually.
As a form of such tandem image processing system, in TOHKEMY 2003-279875 number, Japanese kokai publication hei 10-221617 number, record number with respect to 4 photoreceptor laser scan units and be 2 device (two boxlike).Each scanning element that this image processing system loaded, 2 shared 1 polygonal mirrors of optical system, effective to the miniaturization and the cost degradation of image processing system.
In the tandem image processing system, also there are 4 photoreceptors not arrange in a straight line.In TOHKEMY 2001-42595 communique, disclose such structure: make the 2nd, the 3rd photoreceptor in the 1st～the 4th photoreceptor to about transfer belt one side-prominent 1mm.Disclosed device in this communique, when carrying out panchromatic printing, the transfer belt of carrying feeding recordable paper all contacts with 4 photoreceptors, but when carrying out the monochrome printing, transfer belt is left with 3 photoreceptors beyond the photoreceptor from black.And, such effect is arranged: owing to make the 2nd, the 3rd photoreceptor to about transfer belt one side-prominent 1nm, so the transfer belt in the time of will carrying out panchromatic printing remains suitable state with contacting of each photoreceptor, and, peel off from transfer belt so also have the recording chart of inhibition owing to the recording chart loading end of transfer belt when carrying out monochromatic the printing is flat.
The disclosed device of this communique, the scanning element corresponding with 4 photoreceptors is divided into 4 (4 boxlikes), so if with the 2nd, the 3rd laser scan unit of same structure to dispose movably to transfer belt one side is parallel to the identical distance of the side-prominent distance (be 1mm this moment) of transfer belt one with the 2nd, the 3rd photoreceptor, then can realize optically suitable layout.
Yet, do not arrange when using the two boxlike laser scan unit that helps miniaturization and cost degradation in a straight line the device problem below existing at 4 photoreceptors.
The image processing system of Fig. 4 for example, because certain reason, photosensitive drums 300 is disposed at the position (A-B=1mm) that grows 1mm with respect to photosensitive drums 301 optical path lengths.And photosensitive drums 303 is disposed at the position (C-B=0.5mm) that grows 0.5mm with respect to photosensitive drums 302 (301) optical path lengths.In order to ensure uniform image formation state on each photosensitive drums, imaging len 101,102 uses the identical imaging len of optical characteristics, but imaging len 100,103 uses the different imaging len of optical characteristics.Therefore, the structure difference of 2 laser scan units 200,201 has correspondingly been lost the cost advantage of two boxlikes because structure is different.
Summary of the invention
The present invention makes in view of above-mentioned problem, and its purpose is to provide a kind of image processing system that can suppress cost.
Another object of the present invention is to provide a kind of identical image processing system of optical characteristics that can make the optical element that optical element that the 1st laser scan unit loaded and the 2nd laser scan unit loaded.
A further object of the present invention is to comprise the image processing system that provides such:
Penetrate the 1st laser scan unit of the 1st and the 2nd laser, have the 1st light source that above-mentioned the 1st laser takes place, the 2nd light source that above-mentioned the 2nd laser takes place and the 1st rotating mirror of the above-mentioned the 1st and the 2nd laser deflection that will take place from the above-mentioned the 1st and the 2nd light source;
Penetrate the 2nd laser scan unit of the 3rd and the 4th laser, have the 3rd light source that above-mentioned the 3rd laser takes place, the 4th light source that above-mentioned the 4th laser takes place and the 2nd rotating mirror of the above-mentioned the 3rd and the 4th laser deflection that will take place from the above-mentioned the 3rd and the 4th light source;
The 1st photoreceptor is by above-mentioned the 1st laser radiation;
The 2nd photoreceptor is by above-mentioned the 2nd laser radiation;
The 3rd photoreceptor is by above-mentioned the 3rd laser radiation; And
The 4th photoreceptor is by above-mentioned the 4th laser radiation;
Above-mentioned image processing system is characterised in that:
The light path shape of the light path shape of above-mentioned the 3rd laser from above-mentioned the 3rd light source to above-mentioned the 3rd photoreceptor and above-mentioned the 1st laser from above-mentioned the 1st light source to above-mentioned the 1st photoreceptor is roughly the same;
The light path shape of the light path shape of above-mentioned the 4th laser from above-mentioned the 4th light source to above-mentioned the 4th photoreceptor and above-mentioned the 4th laser from above-mentioned the 2nd light source to above-mentioned the 2nd photoreceptor is roughly the same; And,
The 2nd imaginary line that connects the rotation center of the rotation center of above-mentioned the 3rd photoreceptor and above-mentioned the 4th photoreceptor tilts with respect to the 1st imaginary line of the rotation center of rotation center that is connected above-mentioned the 1st photoreceptor and above-mentioned the 2nd photoreceptor, and the angle of the turning axle of above-mentioned the 2nd rotating mirror and above-mentioned the 2nd imaginary line equals the turning axle of above-mentioned the 1st rotating mirror and the angle of above-mentioned the 1st imaginary line.
A further object of the present invention is to comprise the image processing system that provides such:
Penetrate the 1st laser scan unit of the 1st and the 2nd laser, have the 1st light source that above-mentioned the 1st laser takes place, the 2nd light source that above-mentioned the 2nd laser takes place and the 1st rotating mirror of the above-mentioned the 1st and the 2nd laser deflection that will take place from the above-mentioned the 1st and the 2nd light source;
Penetrate the 2nd laser scan unit of the 3rd and the 4th laser, have the 3rd light source that above-mentioned the 3rd laser takes place, the 4th light source that above-mentioned the 4th laser takes place and the 2nd rotating mirror of the above-mentioned the 3rd and the 4th laser deflection that will take place from the above-mentioned the 3rd and the 4th light source;
The 1st photoreceptor is by above-mentioned the 1st laser radiation;
The 2nd photoreceptor is by above-mentioned the 2nd laser radiation;
The 3rd photoreceptor is by above-mentioned the 3rd laser radiation; And
The 4th photoreceptor is by above-mentioned the 4th laser radiation;
Above-mentioned image processing system is characterised in that:
The light path shape of the light path shape of above-mentioned the 3rd laser from above-mentioned the 3rd light source to above-mentioned the 3rd photoreceptor and above-mentioned the 2nd laser from above-mentioned the 2nd light source to above-mentioned the 2nd photoreceptor is roughly the same;
The light path shape of the light path shape of above-mentioned the 4th laser from above-mentioned the 4th light source to above-mentioned the 4th photoreceptor and above-mentioned the 1st laser from above-mentioned the 1st light source to above-mentioned the 1st photoreceptor is roughly the same; And,
The 2nd imaginary line that connects the rotation center of the rotation center of above-mentioned the 3rd photoreceptor and above-mentioned the 4th photoreceptor tilts with respect to the 1st imaginary line of the rotation center of rotation center that is connected above-mentioned the 1st photoreceptor and above-mentioned the 2nd photoreceptor, and the angle of the turning axle of above-mentioned the 2nd rotating mirror and above-mentioned the 2nd imaginary line equals the turning axle of above-mentioned the 1st rotating mirror and the angle of above-mentioned the 1st imaginary line.
A further object of the present invention is to comprise the image processing system that provides such:
Penetrate the 1st laser scan unit of the 1st and the 2nd laser, have the 1st light source that above-mentioned the 1st laser takes place, the 2nd light source that above-mentioned the 2nd laser takes place and the 1st rotating mirror of the above-mentioned the 1st and the 2nd laser deflection that will take place from the above-mentioned the 1st and the 2nd light source;
Penetrate the 2nd laser scan unit of the 3rd and the 4th laser, have the 3rd light source that above-mentioned the 3rd laser takes place, the 4th light source that above-mentioned the 4th laser takes place and the 2nd rotating mirror of the above-mentioned the 3rd and the 4th laser deflection that will take place from the above-mentioned the 3rd and the 4th light source;
The 1st photoreceptor is by above-mentioned the 1st laser radiation;
The 2nd photoreceptor is by above-mentioned the 2nd laser radiation;
The 3rd photoreceptor is by above-mentioned the 3rd laser radiation; And
The 4th photoreceptor is by above-mentioned the 4th laser radiation;
Above-mentioned image processing system is characterised in that:
The angle of above-mentioned the 1st laser scan unit and above-mentioned the 2nd laser scan unit equals to connect the angle of the 1st imaginary line and the 2nd imaginary line of the rotation center of rotation center that is connected above-mentioned the 3rd photoreceptor and above-mentioned the 4th photoreceptor of the rotation center of the rotation center of above-mentioned the 1st photoreceptor and above-mentioned the 2nd photoreceptor.
Other purposes of the present invention obtain clear and definite below will and be read by the reference accompanying drawing.
Description of drawings
Fig. 1 is the simple cut-open view of the image processing system of the 1st embodiment of the present invention.
Fig. 2 is the cut-away view of laser scan unit that is loaded into the image processing system of the 1st embodiment.
Fig. 3 is the simple cut-open view of the image processing system of the 2nd embodiment of the present invention.
Fig. 4 is the simple cut-open view that is used to understand the image processing system of comparative example of the present invention.
Fig. 5 is the cut-open view that transfer belt and 4 whole state of contact of photosensitive drums are shown.
Fig. 6 is the cut-open view that the state that transfer belt and 3 photosensitive drums 1C, 1Y, 1M be separated is shown.
Fig. 7 is the stereographic map of the image processing system of the 1st embodiment.
Fig. 8 is the stereographic map of installment state that the laser scan unit of the image processing system that is loaded into the 1st embodiment is shown.
Fig. 9 is the stereographic map of variation that the installment state of laser scan unit is shown.
Figure 10 is the simple cut-open view of image processing system of the variation of the 1st embodiment.
Figure 11 is the simple cut-open view of image processing system of the variation of the 1st embodiment.
Figure 12 is the simple cut-open view of image processing system of the variation of the 1st embodiment.
Figure 13 is the simple cut-open view of the image processing system of the 3rd embodiment of the present invention.
Figure 14 is the stereographic map of the image processing system of the 3rd embodiment.
Embodiment
The 1st embodiment
Use description of drawings the 1st embodiment of the present invention.Fig. 1 is the key diagram of the image processing system of the 1st embodiment.In explanation, illustrate that at first entire image forms device, illustrates the structure of scanning optical apparatus (laser scan unit) then.
(image processing system)
Fig. 1 is the figure of the image processing system 15 of expression embodiments of the present invention.Image processing system 15 can overlap 4 looks (cyan C, yellow Y, magenta M, black K) toner picture and form coloured image, has 4 images and forms the station.Each image forms the station and has the 1st picture supporting body (photosensitive drums 1C), the 2nd picture supporting body (photosensitive drums 1Y), the 3rd picture supporting body (photosensitive drums 1M), the 4th picture supporting body (photosensitive drums 1K) respectively.
In addition, image processing system 15 have to above-mentioned 4 as supporting body expose scanning 2 scanning optical apparatus 16 (the 1st scanning optical apparatus (the 1st laser scan unit) 16a, the 2nd scanning optical apparatus (the 2nd laser scan unit) 16b).The 1st scanning optical apparatus 16a and the 2nd scanning optical apparatus 16b are same structure, the 1st scanning optical apparatus 16a is to photosensitive drums 1C (the 1st photoreceptor) and photosensitive drums 1Y (the 2nd photoreceptor) illumination beam, and the 2nd scanning optical apparatus 16b is to photosensitive drums 1M (the 3rd photoreceptor) and photosensitive drums 1K (the 4th photoreceptor) illumination beam.Structure about scanning optical apparatus 16a, 16b will be explained below.
The circumferential arrangement of photosensitive drums 1 (1C, 1Y, 1M, 1K) have the photosensitive drums of making 1 uniform charged once charged device 2 (2C, 2Y, 2M, 2K), make the developer 4 (4C, 4Y, 4M, 4K) that is formed at the image development on the photosensitive drums 1, will be formed at the clearer 6 (6C, 6Y, 6M, 6K) that toner on the photosensitive drums 1 looks like to be transferred to transfer roll 5 (5C, 5Y, 5M, 5K) on the transfer materials of being carried by transfer belt 78, the remaining toner on the photosensitive drums 1 is cleaned.
In Fig. 1, below photosensitive drums 1, have: be used to pile up the pallet 9 of accommodating transfer materials 8, from pallet 9 carry one by one the timing of being sent roller 10, being used for forming of transfer materials 8 with image synchronously carry the resistance paper bowl 11 of the transfer materials 8 that is sent, contact with 4 photosensitive drums 1, successively to the transfer belt 7 of each photosensitive drums conveying transfer materials 8.Transfer belt 7 is twined by driven roller 12 and idler roller 30 and is set up.Driven roller 12 carries out the conveying of transfer belt 7 accurately, and the driving motor (not shown) unstable less with rotation is connected.Dispose transfer materials 8 after being used for toner being formed as the fuser 13 of photographic fixing to transfer materials 8, with image in the conveyance direction downstream side of the transfer materials 8 of transfer belt 7 and be discharged to distributing roller 14 outside the device by heating, pressurization etc.
In above structure, illustrate that the image of image processing system 15 forms action.At first, by once charged device 2C, 2Y, 2M, 2K make uniform charged on photosensitive drums 1C, 1Y, 1M, the 1K surface.Then, from scanning optical apparatus 16a, 16b to photosensitive drums 1C, 1Y, 1M, 1K illumination beam (laser beam) 3C, 3Y, 3M, 3K.Based on image information light beam 3C, 3Y, 3M, 3K are carried out optical modulation respectively, thereby on irradiated photosensitive drums 1C, 1Y, 1M, 1K surface, form the sub-image that meets image information.This sub-image is developed device 4C, 4Y, 4M, 4K supply with developer (toner) of all kinds and become visual picture, becomes the toner picture of cyan, yellow, magenta, black respectively.
Be formed at each colour toners picture on the photosensitive drums 1 owing to the voltage that is applied on the transfer roll 5 is electrostatically attracted to transfer roll 5 one sides.At this, owing on the transfer belt 7 that is disposed between transfer roll 5 and the photosensitive drums 1, carry transfer materials 8, so above-mentioned toner picture of all kinds (image of cyan, yellow image, the image of magenta, the image of black) is electrostatically transferred on the transfer materials 8, overlaps successively and form coloured image.Be formed at coloured image on the transfer materials 8 by fuser 13 hot photographic fixing.Then, transfer materials 8 is by conveyings such as distributing rollers 14 and be discharged to outside the image processing system 15.
After this, residuing in photosensitive drums 1 lip-deep remaining toner is removed by clearer 6.Then, in order to form next coloured image, make photosensitive drums 1 uniform charged once more by charged device 2 once.
The image processing system of present embodiment except the panchromatic mode with whole 4 images formation of above-mentioned utilization station, also has the monochromatic mode that the image that only utilizes black forms the station.
The state of the transfer belt 7 when Fig. 5 illustrates panchromatic mode, the state of the transfer belt 7 when Fig. 6 illustrates monochromatic mode.3 transfer roll 5C, 5Y of present embodiment, 5M can be towards the directions that transfer belt 7 is contacted with photosensitive drums 1C, 1Y, 1M, and towards making transfer belt 7 move (transfer roll 5K do not move) from the direction that photosensitive drums 1C, 1Y, 1M leave.
Under panchromatic mode, carry out image when forming, as shown in Figure 5, push away transfer belt 7 on 3 transfer roll 5C, 5Y, the 5M, so that transfer belt 7 all contacts with 4 photosensitive drums 1C, 1Y, 1M, 1K.When under monochromatic (black and white) pattern, carrying out image formation, then as shown in Figure 6, make transfer roll 5C, 5Y, 5M except that black drop to downside, so that transfer belt 7 does not contact with 3 photosensitive drums 1C, 1Y, 1M.The image processing system of present embodiment, when white-black pattern, 3 photosensitive drums 1C, 1Y, 1M do not rotate, and stop, and do not use these photosensitive drums.Therefore, the life-span that causes photosensitive drums 1C, 1Y, 1M for transfer belt 7 sliding frictions that suppress non-rotary photosensitive drums 1C, 1Y, 1M and rotation reduces, when white-black pattern, transfer roll 5C, 5Y, 5M drop to downside, thereby transfer belt 7 does not contact with 3 photosensitive drums 1C, 1Y, 1M.Black all is in same position with transfer roll 5K during when the panchromatic mode with at monochromatic mode, does not move.
Like this, the image processing system of present embodiment has transfer belt 7 and 3 structures that photosensitive drums 1C, 1Y, 1M are separated when white-black pattern.Therefore, in the image processing system of present embodiment, for transfer belt 7 is separated with 3 photosensitive drums 1C, 1Y, 1M simply, be not make all photosensitive drums rotation center configuration in a straight line, but with the photosensitive drums 1K of black image be configured in respect to other photosensitive drums along the vertical direction (the Z direction of Fig. 1) to by time about 1mm place.At this, if when the straight line that connecting the straight line of the rotation center of photosensitive drums 1C (the 1st photoreceptor) and the rotation center of photosensitive drums 1Y (the 2nd photoreceptor) is the 1st imaginary line l1, be connected the rotation center of the rotation center of photosensitive drums 1M (the 3rd photoreceptor) and photosensitive drums 1K (the 4th photoreceptor) is the 2nd imaginary line l2, is configured to the 1st imaginary line l1 and the 2nd imaginary line l2 and has angle θ (the 2nd imaginary line l2 tilts with respect to the 1st imaginary line l1).In addition, each rotation center of 3 photosensitive drums 1C, 1Y, 1M is arranged on the same straight line.The diameter of 4 photosensitive drums equates.
Like this, by only photosensitive drums 1K being configured to than other photosensitive drums to have such advantage by downside:, transfer belt 7 and 3 photosensitive drums 1C, 1Y, 1M are separated even the slippage of 3 transfer roll 5C, 5Y, 5M is less.
In the present embodiment, the centre distance of black photosensitive drum 1K and magenta photosensitive drums 1M is identical with the centre distance of yellow photosensitive drums 1Y and cyan photosensitive drums 1C, and also the centre distance with magenta photosensitive drums 1M and yellow photosensitive drums 1Y is identical.Parallel from the 2 light beams 3C that the 1st scanning optical apparatus 16a penetrates with 3Y.Equally, parallel from 2 light beams 3M of the 2nd scanning optical apparatus 16b ejaculation with 3K.
(scanning optical apparatus (laser scan unit))
The image processing system of present embodiment has loaded the laser scan unit that will 4 the scanning optics corresponding with 4 photoreceptors be divided into two boxlikes of 2 laser scan units.
Scanning optical apparatus 16a, 16b in Fig. 1, be located at photosensitive drums 1 above.At this, the 1st scanning optical apparatus 16a (the 1st laser scan unit) is mutual identical structure with the 2nd scanning optical apparatus 16b (the 2nd laser scan unit).
In addition, the 1st scanning optical apparatus 16a and the 2nd scanning optical apparatus 16b dispose as follows according to the angle theta of above-mentioned the 1st imaginary line l1 and the 2nd imaginary line l2.That is, be configured to have angle θ to the light beam 3Y (the 2nd laser) of photosensitive drums 1Y (the 2nd photoreceptor) ejaculation with from the 2nd scanning optical apparatus 16b to the light beam 3K (the 4th laser) that photosensitive drums 1K (the 4th photoreceptor) penetrates from the 1st scanning optical apparatus 16a.Also is θ to the light beam 3C (the 1st laser) of photosensitive drums 1C (the 1st photoreceptor) ejaculation with from the 2nd scanning optical apparatus 16b to the angle of the light beam 3M (the 3rd laser) of photosensitive drums 1M (the 3rd photoreceptor) ejaculation from the 1st scanning optical apparatus 16a.
At this, in the present embodiment, the distance of ejaculation position (the laser outgoing plane of lens 23Y) that as shown in Figure 1, will be, be identical (the two all is that distance is m1) with the distance setting of ejaculation position (the laser outgoing plane of lens 23K) from photosensitive drums 1K (the 4th photoreceptor) to the light beam 3K of the 2nd scanning optical apparatus 16b from photosensitive drums 1Y (the 2nd photoreceptor) to the light beam 3Y of the 1st scanning optical apparatus 16a.In addition, in the present embodiment, light beam 3C is parallel with light beam 3Y, and light beam 3M is also parallel with light beam 3K.Yet light beam 3C may not need parallel with light beam 3Y.Light beam 3M and light beam 3K are too.Angle θ in the present embodiment is about 1 °.
Fig. 2 is the vertical view of scanning optical apparatus 16a.At this, the 2nd scanning optical apparatus 16b is identical inner structure with the 1st scanning optical apparatus 16a, has therefore omitted the explanation about the 2nd scanning optical apparatus 16b.
As shown in Figure 2, from the light beam (the 1st laser 3C and the 2nd laser 3Y) that penetrates according to the image information of (cyan, yellow) of all kinds as the semiconductor laser 19 (the 1st light source 19C, the 2nd light source 19Y) of light source, by polygonal rotating mirror (the 1st rotating mirror) 20a that is disposed at central authorities along and corresponding different directions of all kinds scanning.Polygonal rotating mirror 20a is driven by driving motor (light deflector) rotation.At this, as shown in Figures 1 and 2, be mounted with driving motor substrate 20A, scanning lens (f θ lens) 21 and catoptron 22 etc. optics by in be contained in the optical box 17a.The upper opening of optical box 17a is by optical cover 18a obturation.The optical box 17a of present embodiment and optical box 17b are to use that equal dies is shaped, the parts of resin manufacture.
The light beam 3 (3C, 3Y) that scans by polygonal rotating mirror 20a sees through scanning lens 21 (21C, 21Y) respectively and the mirror 22 that is reflected (22C, 22Y) reflects to the direction that photosensitive drums 1 is arranged (below of Fig. 1).Thereafter, light beam 3 (3C, 3Y) sees through imaging len 23 (23C, 23Y) as shown in Figure 1 and penetrates from the 1st scanning optical apparatus 16a.After seeing through imaging len 23, light beam 3 imaging on photosensitive drums 1C, 1Y.The centre distance of imaging len 23C and imaging len 23Y, identical with the distance of photosensitive drums 1C and photosensitive drums 1Y.
As mentioned above, in the present embodiment, when the 2nd imaginary line l2 of the 1st imaginary line l1 of the rotation center that connects photosensitive drums 1C, 1Y and the rotation center that is connected photosensitive drums 1M, 1K has angle θ, according to this angle θ, with scanning optical apparatus 16a, the 16b configuration obliquely mutually of 2 same structures.So, the relative position relation of the photosensitive drums 1M of the 2nd scanning optical apparatus 16b and magenta and the photosensitive drums 1K of black is identical with the relative position relation of the photosensitive drums 1Y of the photosensitive drums 1C of the 1st scanning optical apparatus 16a and cyan and yellow.
Like this, even on the rotation center dead in line of photosensitive drums 1C, 1Y, 1M, when only photosensitive drums 1K was not configured on the above-mentioned straight line, the optical path length from each imaging len 23 (23C, 23Y, 23M, 23K) to photosensitive drums 1 (1C, 1Y, 1M, 1K) was roughly the same length.Therefore, path difference is closed in the depth of focus of scanning optics lens, can satisfy predetermined spot diameter.
In the present embodiment, from the light path shape of the 3rd laser 3M of the 3rd light source 19M to the 3 photoreceptor 1M, roughly the same, from the light path shape of the 4th laser 3K of the 4th light source 19K to the 4 photoreceptor 1K, roughly the same with the light path shape of the 2nd laser 3Y with light path shape from the 1st laser 3C of the 1st light source 19C to the 1 photoreceptor 1C.That is, the 3rd laser 3M and the 1st laser 3C all be from the light source to the photoreceptor optical path length about equally, and the laser in the light path by mirror reflects reflection angle also about equally.The 4th laser 3K and the 2nd laser 3Y also all be from the light source to the photoreceptor optical path length about equally, and also about equally by the reflection angle of the laser in the light path of mirror reflects.
Form in the image processing system of full-colour image at the toner picture that overlaps polychrome, need adjust, the dislocation of the sweep trace that causes with the colour cast that suppresses image.In the manufacturing process of the image processing system of present embodiment, after 2 laser scan units have been installed on the image processing system main body,, carry out the irradiation position adjustment of sweep trace along sub scanning direction mobile lens 23C, 23Y, 23M, 23K.In the image processing system of present embodiment, do not carry out the irradiation position adjustment, but as the additive method that optics is adjusted, also have by the angle of adjusting catoptron 22C, 22Y, 22M, 22K carry out sweep trace the irradiation position adjustment method and adjust these lens and the method for this two aspect of catoptron.The irradiation position adjustment of such sweep trace, for calibration by the component tolerance of optical elements such as lens, catoptron or optical box, when being installed to optical box on the image processing system and the dislocation of the sweep trace that causes such as the assembling tolerance when being installed to optical element on the optical box carry out, as long as there is tolerance, just need adjust.For example, in the scope of its adjusting range about photosensitive drums upper edge sub scanning direction (drum sense of rotation) ± 2mm.
Like this, though be designed to light path be shaped as identical shaped, the also optics adjustment that need carry out for the dislocation of proofreading and correct the sweep trace that causes by tolerance.Therefore, the image processing system that has carried out the optics adjustment for the dislocation of proofreading and correct the sweep trace that is caused by tolerance also falls into the definition category of " the light path shape is roughly the same ".
In the present embodiment, connect the 2nd imaginary line l2 of the rotation center of the rotation center of the 3rd photoreceptor 1M and the 4th photoreceptor 1K, with respect to the 1st imaginary line l1 tilt angle theta of the rotation center of rotation center that connects the 1st photoreceptor 1C and the 2nd photoreceptor 1Y.And as shown in Figure 1, the angle α of the turning axle x2 of the 2nd rotating mirror 20b and the 2nd imaginary line l2 equals the turning axle x1 of the 1st rotating mirror 20a and the angle α of the 1st imaginary line l1.
Like this, because the light path shape of the 3rd laser 3M and the light path shape of the 1st laser 3C are roughly the same, the light path shape of the light path shape of the 4th laser 3K and the 2nd laser 3Y is roughly the same, and the angle α of the turning axle x2 of the 2nd rotating mirror 20b and the 2nd imaginary line l2 equals the turning axle x1 of the 1st rotating mirror 20a and the angle α of the 1st imaginary line l1, optically characteristic is roughly the same even so the 2nd imaginary line l2, also can make a plurality of optical elements that a plurality of optical elements that the 1st laser scan unit loaded and the 2nd laser scan unit loaded with respect to the 1st imaginary line l1 tilt angle theta.Therefore, can utilize the advantage of the laser scan unit of two boxlikes to suppress the cost of image processing system.In the present embodiment, optical box 17a and 17b are to use same mould to make, so the effect that further reduces cost is arranged.That is, in the present embodiment, 2 laser scan units are identical structure.
As shown in Figure 1, in the present embodiment, from the 1st laser 3C of the 1st rotating mirror 20a to the 1 photoreceptor 1C towards with from the 2nd laser 3Y of the 1st rotating mirror 20a to the 2 photoreceptor 1Y towards opposite, but the optical path length of these 2 light paths from the light source to the photoreceptor about equally, and the reflection angle of the laser in the light path also about equally, so this moment, it is identical to regard the light path shape as.The relation of the 3rd laser 3M and the 4th laser 3K also is identical.That is, 4 optical system is roughly the same light path shape, so the optical system of 4 systems corresponding with 4 photoreceptors can both use optical element roughly the same on the optics to constitute, can help further to reduce cost.
Shown in present embodiment, the angle α of the turning axle x2 of the 2nd rotating mirror 20b and the 2nd imaginary line l2 equals the turning axle x1 of the 1st rotating mirror 20a and the angle α of the 1st imaginary line l1, and the light path shape of the 1st laser and the light path shape of the 3rd laser is roughly the same, when the light path shape of the light path shape of the 2nd laser and the 4th laser is roughly the same, as shown in Figure 1, inciding the angle, identical with the angle of the 1st imaginary line l1 and the 2nd imaginary line l2 of the 1st laser 3C of the 1st photoreceptor 1C and the 3rd laser 3M that incides the 3rd photoreceptor 1M, all is θ.In addition, the angle that incides the 2nd laser 3Y of the 2nd photoreceptor 1Y and incide the 4th laser 3K of the 4th photoreceptor 1K also is θ.
Like this, because the 1st scanning optical apparatus 16a and the 2nd scanning optical apparatus 16b are same structure,, can produce scanning optical apparatus 16 (16a, 16b) by same production process so need not redesign imaging len 23 in order to make the optical path length unanimity.For this reason, carry out production management easily, can make scanning optical apparatus with low cost.By reducing the cost of scanning optical apparatus, also can provide image processing system with low cost.
In addition, because the 1st scanning optical apparatus 16a and the 2nd scanning optical apparatus 16b are same structure, can make the offset of scan lines between of all kinds minimum.For this reason, can provide colour cast less, preferable image.
Fig. 7 cuts away the part of the outer cover of image processing system and optical box and the internally stereographic map of the image processing system of the present embodiment of expression that exposes 2 laser scan units.
As mentioned above, in the present embodiment, the light path shape of the 1st laser and the light path shape of the 3rd laser are roughly the same, and the light path shape of the 2nd laser and the light path shape of the 4th laser are roughly the same.At this moment, as shown in Figure 7, be loaded into same side 70 (being rear side in the present embodiment) side that 2 light source 19C and 19Y of the 1st laser scan unit, 2 light source 19M that are loaded into the 2nd laser scan unit and 19K are disposed in the image processing system main body.Like this, if 4 light sources all are disposed in the same side side, then has easily around the drive circuit substrate of loading light source (semiconductor laser) advantage of carrying out the assembling of device around electric wire, easily.
In above-mentioned present embodiment, the 2nd imaginary line l2 is with respect to the 1st imaginary line l1 tilt angle theta, but the 2nd laser scan unit 16b (or optical box 17b) is also with respect to the 1st laser scan unit 16a (or optical box 17a) tilt angle theta.In order to make the 2nd laser scan unit 16b with respect to the 1st laser scan unit 16a tilt angle theta, in the present embodiment, as shown in Figure 8, the plate 33b (the 2nd retaining member) that is used in the location and keeps the 2nd laser scan unit 16b is with respect to the plate 33a that is used to locate and install the 1st laser scan unit 16a (the 1st retaining member) tilt angle theta.With screw 32a the 1st laser scan unit 16a is installed on the plate 33a, the 2nd laser scan unit 16b is installed on the plate 33b with screw 32b.
In addition, in the present embodiment, the angle that makes two plate 33a, 33b is θ, but as shown in Figure 9, also can on a plate (retaining member), be provided with two holes (location division) (this plate respectively is provided with at the front side and the rear side of image processing system main body respectively) that are used for 2 laser scan units are positioned, to make the angle in these holes be θ.In the example of Fig. 9, with among 4 limits that form tetragonal pilot hole, cross one another 2 limits position laser scan unit.In a word, be θ as long as be used in the angle of the part that each laser scan unit is positioned.Be separately positioned on the sheet metal manufacturing that these plates of the front side of image processing system main body and rear side preferably use same stamping machine to process.This be since by use same stamping machine to have the location process with these two plates in hole, thereby the raising laser scan unit bearing accuracy.
As mentioned above, in the present embodiment, the light path shape of 4 optical system all is roughly the same, but it is roughly the same that the light path shape of the light path shape of the 1st laser 3C and the 2nd laser 3Y may not need, and the light path shape of the light path shape of the 3rd laser 3M and the 4th laser 3K also may not need roughly the same.Therefore, be used to form the 1st laser 3C light path a plurality of optical elements and form a plurality of optical elements of the light path of the 2nd laser 3Y, its optical characteristics may not need roughly the same, form the 3rd laser 3M light path a plurality of optical elements and form a plurality of optical elements of the light path of the 4th laser 3K, its optical characteristics also may not need roughly the same.
For example, Figure 10 and image processing system shown in Figure 11, the light path shape of the light path shape of the 3rd laser 3M and the 1st laser 3C is roughly the same, the light path shape of the light path shape of the 4th laser 3K and the 2nd laser 3Y is roughly the same, but the light path shape of the light path shape of the 1st laser 3C and the 2nd laser 3Y is not roughly the same, and the light path shape of the light path shape of the 3rd laser 3M and the 4th laser 3K neither be roughly the same.Yet, image processing system as shown in Figure 10 and Figure 11, the light path shape that also is the light path shape of the 3rd laser 3M and the 1st laser 3C is roughly the same, the light path shape of the light path shape of the 4th laser 3K and the 2nd laser 3Y is roughly the same, and the angle α of the turning axle x2 of the 2nd rotating mirror 20b and the 2nd imaginary line l2 equals the turning axle x1 of the 1st rotating mirror 20a and the angle α of the 1st imaginary line l1, is that to make the 1st laser scan unit and the 2nd laser scan unit be the example of same general configuration.
In addition, as long as the light path shape of the light path shape of the 3rd laser 3M and the 1st laser 3C is roughly the same, the light path shape of the light path shape of the 4th laser 3K and the 2nd laser 3Y is roughly the same, do not need to make the shape of optical box (the 2nd optical box) 17b of the shape of optical box (the 1st optical box) 17a of the 1st laser scan unit and the 2nd laser scan unit identical.
For example, image processing system shown in Figure 12, the light path shape of laser 3M～3K of 4 is all roughly the same, but the shape of the shape of optical box 17a and optical box 17b some is different.Particularly, near the shape of the optical box catoptron 22Y and the catoptron 22K is different at the two.Because the difference of this shape, the thickness t 2 of catoptron 22K is thinner than the thickness t 1 of other 3 catoptron 22C, 22Y, 22M.Yet catoptron 22K and other catoptrons 22C, 22Y, 22M are only variant on thickness, and optical characteristics is roughly the same.Promptly, image processing system shown in Figure 12, the light path shape that also is the light path shape of the 3rd laser 3M and the 1st laser 3C is roughly the same, the light path shape of the light path shape of the 4th laser 3K and the 2nd laser 3Y is roughly the same, and the angle α of the turning axle x2 of the 2nd rotating mirror 20b and the 2nd imaginary line l2 equals the turning axle x1 of the 1st rotating mirror 20a and the angle α of the 1st imaginary line l1, is to make a plurality of optical elements of being loaded into the 1st laser scan unit and the 2nd laser scan unit (catoptron 22C～22K and lens 23C～23K) are the example of same general configuration.
Yet, as the 1st laser scan unit 16a and the 2nd laser scan unit 16b of present embodiment, make optical box or the optical element that is loaded into wherein all is roughly the same structure, highly beneficial to reducing cost, be preferred.
The 2nd embodiment
Use Fig. 3 that the 2nd embodiment of the present invention is described.Fig. 3 is the key diagram of the image processing system of the 2nd embodiment.In explanation, to above-mentioned its explanation of same incomplete structure.
(image processing system)
As shown in Figure 3, the image processing system 52 of present embodiment has the 1st above-mentioned scanning optical apparatus 16a and the 2nd scanning optical apparatus 16b.
Same with above-mentioned embodiment, light beam 51C, the 51Y, 51M, the 51K that penetrate from scanning optical apparatus 16a, 16b form sub-image on photosensitive drums 50C, 50Y, 50M, 50K surface.Vertical direction (Z direction among the figure) black at two ends and the photosensitive drums 50K of cyan, 50C in 4 photosensitive drums, image processing system 52 dispose to about the outstanding 1mm of transfer materials conveying belt 54 1 sides (directions X among the figure) with respect to magenta and yellow photosensitive drums 50M, 50Y.
Transfer materials conveying belt 54, Zuo Ce outer peripheral face is adsorbing transfer materials 53 by Electrostatic Absorption in the drawings, moves along clockwise direction circulation among the figure for transfer materials 53 is contacted with photosensitive drums 50C, 50Y, 50M, 50K.Circulation by transfer materials conveying belt 54 is moved, and transfer materials 53 is transported to transfer position (position relative with each photosensitive drums).So, be transferred the toner picture of each photosensitive drums 50C, 50Y, 50M, 50K on the transfer materials 53.On transfer materials 53 successively transfer printing toner of all kinds as the time, on transfer materials 53, form coloured image.Then, the coloured image on the transfer materials 53 is output to outside the device then by fuser 55 hot photographic fixing.
Then, each photosensitive drums 50, light beam 51, and the position relation of scanning optical apparatus 16 are described.
The centre distance of the photosensitive drums 50K of black and the photosensitive drums 50M of magenta, identical with the centre distance of the photosensitive drums 50C of the photosensitive drums 50Y of yellow and cyan, also identical with the centre distance of photosensitive drums 50M and photosensitive drums 50Y yellow of magenta.Parallel from the 2 light beams 51C that the 1st scanning optical apparatus 16a penetrates with 51Y.Equally, parallel from 2 light beams 51M of the 2nd scanning optical apparatus 16b ejaculation with 51K.
At this, image processing system 52 is configured to: connect the 1st imaginary line l1 of the rotation center of the rotation center of photosensitive drums 50C and 50Y, have angle θ with the 2nd imaginary line l2 of the rotation center of rotation center that is connected photosensitive drums 50M and photosensitive drums 50K.In addition, the 2nd scanning optical apparatus 16b is configured to respect to the 1st scanning optical apparatus 16a tilt angle theta.In the present embodiment, angle θ is about 1 °.In addition, the 1st scanning optical apparatus 16a and the 2nd scanning optical apparatus 16b are same structure.
Present embodiment is also same with the 1st embodiment, the light path shape of the light path shape of the 3rd laser 51M and the 1st laser 51C is roughly the same, the light path shape of the light path shape of the 4th laser 51K and the 2nd laser 51Y is roughly the same, and the angle α of the turning axle x2 of the 2nd rotating mirror 20b and the 2nd imaginary line l2 equals the turning axle x1 of the 1st rotating mirror 20a and the angle α of the 1st imaginary line l1.
According to present embodiment, even photosensitive drums 50C, 50K in 4 photosensitive drums 50 (50C, 50Y, 50M, 50K), vertical direction (Z direction among the figure) two ends must be arranged in the image processing system that makes the outstanding structure of its along continuous straight runs (directions X among the figure), also can make the structure of 2 scanning optical apparatus 16a and 16b roughly the same, the cost that can seek image processing system reduces.
The 3rd embodiment
Figure 13 and Figure 14 illustrate the 3rd embodiment.In the 1st and the 2nd above-mentioned embodiment, the light path shape of the 3rd laser and the light path shape of the 1st laser are roughly the same, and the light path shape of the 4th laser and the light path shape of the 2nd laser are roughly the same.To this, in the present embodiment, the light path shape of the 1st laser and the light path shape of the 4th laser are roughly the same, and the light path shape of the light path shape of the 2nd laser and the 3rd laser is roughly the same.At this moment, as shown in figure 14, be loaded into the side (being the front side in the present embodiment) that 2 light source 19C on the 1st laser scan unit 16a and 19Y are disposed in image processing system, 2 the light source 19M and the 19K that are loaded on the 2nd laser scan unit 16b are disposed in another side (being rear side in the present embodiment).
Yet, present embodiment also is that the turning axle x2 of the 2nd rotating mirror 20b and the angle α of the 2nd imaginary line l2 equal the turning axle x1 of the 1st rotating mirror 20a and the angle α of the 1st imaginary line l1, so can make the optical characteristics of a plurality of optical elements that a plurality of optical elements that the 1st laser scan unit loaded and the 2nd laser scan unit loaded roughly the same.Therefore, can utilize the advantage of the laser scan unit of two boxlikes to suppress the cost of image processing system.Same with the 1st embodiment, be that same structure just can reduce cost as long as make optical box 17a and optical box 17b.
(other embodiments)
In the above-described embodiment, of all kinds by the series arrangement of cyan C, yellow Y, magenta M, black K, but be not limited to this, arrange in differing order and also can obtain identical effect.
In addition, may not be parallel from 2 the laser that 1 scanning optical apparatus penetrates, also can be non-parallel as Figure 10, Figure 12, Figure 13.
In addition, as long as the optics of the scanning optics of 2 scanning optical apparatus is identical, the shape of the parts of the outside of formation such as optical box, optical cover scanning optical apparatus can be different.
The invention is not restricted to above-mentioned example, be also included within the distortion in its technological thought.
The application enjoys the right of priority of Japanese patent application No. 2005-200465 number of the Japanese patent application No. application on July 8th, 2004-212857 number 1 of on July 21st, 2004 application, quotes the part of its content as the application.
(according to the modification of the 19th of treaty)
1. image processing system comprises:
Penetrate the 1st laser scan unit of the 1st and the 2nd laser, have the 1st light source that above-mentioned the 1st laser takes place, the 2nd light source that above-mentioned the 2nd laser takes place and the 1st rotating mirror of the above-mentioned the 1st and the 2nd laser deflection that will take place from the above-mentioned the 1st and the 2nd light source;
Penetrate the 2nd laser scan unit of the 3rd and the 4th laser, have the 3rd light source that above-mentioned the 3rd laser takes place, the 4th light source that above-mentioned the 4th laser takes place and the 2nd rotating mirror of the above-mentioned the 3rd and the 4th laser deflection that will take place from the above-mentioned the 3rd and the 4th light source;
The 1st photoreceptor is by above-mentioned the 1st laser radiation;
The 2nd photoreceptor is by above-mentioned the 2nd laser radiation;
The 3rd photoreceptor is by above-mentioned the 3rd laser radiation; And
The 4th photoreceptor is by above-mentioned the 4th laser radiation;
Above-mentioned image processing system is characterised in that:
The light path shape of the light path shape of above-mentioned the 3rd laser from above-mentioned the 3rd light source to above-mentioned the 3rd photoreceptor and above-mentioned the 1st laser from above-mentioned the 1st light source to above-mentioned the 1st photoreceptor is roughly the same;
The light path shape of the light path shape of above-mentioned the 4th laser from above-mentioned the 4th light source to above-mentioned the 4th photoreceptor and above-mentioned the 2nd laser from above-mentioned the 2nd light source to above-mentioned the 2nd photoreceptor is roughly the same; And,
The 2nd imaginary line that connects the rotation center of the rotation center of above-mentioned the 3rd photoreceptor and above-mentioned the 4th photoreceptor tilts with respect to the 1st imaginary line of the rotation center of rotation center that is connected above-mentioned the 1st photoreceptor and above-mentioned the 2nd photoreceptor, and the angle of the turning axle of above-mentioned the 2nd rotating mirror and above-mentioned the 2nd imaginary line equals the turning axle of above-mentioned the 1st rotating mirror and the angle of above-mentioned the 1st imaginary line.
2. image processing system according to claim 1 is characterized in that:
From the angle of above-mentioned the 1st laser scan unit above-mentioned the 1st laser that penetrates and above-mentioned the 3rd laser that penetrates from above-mentioned the 2nd laser scan unit, and from above-mentioned the 1st laser scan unit above-mentioned the 2nd laser that penetrates and above-mentioned the 4th laser that penetrates from above-mentioned the 2nd laser scan unit
Claims (13)
1. image processing system comprises:
Penetrate the 1st laser scan unit of the 1st and the 2nd laser, have the 1st light source that above-mentioned the 1st laser takes place, the 2nd light source that above-mentioned the 2nd laser takes place and the 1st rotating mirror of the above-mentioned the 1st and the 2nd laser deflection that will take place from the above-mentioned the 1st and the 2nd light source;
Penetrate the 2nd laser scan unit of the 3rd and the 4th laser, have the 3rd light source that above-mentioned the 3rd laser takes place, the 4th light source that above-mentioned the 4th laser takes place and the 2nd rotating mirror of the above-mentioned the 3rd and the 4th laser deflection that will take place from the above-mentioned the 3rd and the 4th light source;
The 1st photoreceptor is by above-mentioned the 1st laser radiation;
The 2nd photoreceptor is by above-mentioned the 2nd laser radiation;
The 3rd photoreceptor is by above-mentioned the 3rd laser radiation; And
The 4th photoreceptor is by above-mentioned the 4th laser radiation;
Above-mentioned image processing system is characterised in that:
The light path shape of the light path shape of above-mentioned the 3rd laser from above-mentioned the 3rd light source to above-mentioned the 3rd photoreceptor and above-mentioned the 1st laser from above-mentioned the 1st light source to above-mentioned the 1st photoreceptor is roughly the same;
The light path shape of the light path shape of above-mentioned the 4th laser from above-mentioned the 4th light source to above-mentioned the 4th photoreceptor and above-mentioned the 4th laser from above-mentioned the 2nd light source to above-mentioned the 2nd photoreceptor is roughly the same; And,
The 2nd imaginary line that connects the rotation center of the rotation center of above-mentioned the 3rd photoreceptor and above-mentioned the 4th photoreceptor tilts with respect to the 1st imaginary line of the rotation center of rotation center that is connected above-mentioned the 1st photoreceptor and above-mentioned the 2nd photoreceptor, and the angle of the turning axle of above-mentioned the 2nd rotating mirror and above-mentioned the 2nd imaginary line equals the turning axle of above-mentioned the 1st rotating mirror and the angle of above-mentioned the 1st imaginary line.
2. image processing system according to claim 1 is characterized in that:
From the angle of above-mentioned the 1st laser scan unit above-mentioned the 1st laser that penetrates and above-mentioned the 3rd laser that penetrates from above-mentioned the 2nd laser scan unit, and, all equal the angle of above-mentioned the 1st imaginary line and above-mentioned the 2nd imaginary line from the angle of above-mentioned the 1st laser scan unit above-mentioned the 2nd laser that penetrates and above-mentioned the 4th laser that penetrates from above-mentioned the 2nd laser scan unit.
3. image processing system according to claim 1 is characterized in that:
The distance of the position from above-mentioned the 2nd photoreceptor to above-mentioned the 2nd laser of the ejaculation of above-mentioned the 1st laser scan unit equates with the distance of position from above-mentioned the 4th photoreceptor to above-mentioned the 4th laser of the ejaculation of above-mentioned the 2nd laser scan unit.
4. image processing system according to claim 1 is characterized in that:
Above-mentioned the 1st laser scan unit has the 1st optical box that keeps the above-mentioned the 1st and the 2nd light source and above-mentioned the 1st rotating mirror, and above-mentioned the 2nd laser scan unit has the 2nd optical box that keeps the above-mentioned the 3rd and the 4th light source and above-mentioned the 2nd rotating mirror.
5. image processing system according to claim 4 is characterized in that:
Above-mentioned the 1st optical box and above-mentioned the 2nd optical box all are to use same mould article shaped that produce, resin manufacture.
6. image processing system according to claim 4 is characterized in that:
Also have and be used to locate and keep the 1st retaining member of above-mentioned the 1st optical box and be used to locate and keep the 2nd retaining member of above-mentioned the 2nd optical box,
Above-mentioned the 2nd retaining member tilts with respect to above-mentioned the 1st retaining member, so that the angle of the turning axle of above-mentioned the 1st rotating mirror and above-mentioned the 1st imaginary line equals the turning axle of above-mentioned the 2nd rotating mirror and the angle of above-mentioned the 2nd imaginary line.
7. image processing system according to claim 4 is characterized in that:
Also have the retaining member that is used to locate and keep above-mentioned the 1st optical box and above-mentioned the 2nd optical box,
Two location divisions being located on the above-mentioned retaining member have angle, so that the angle of the turning axle of above-mentioned the 1st rotating mirror and above-mentioned the 1st imaginary line equals the turning axle of above-mentioned the 2nd rotating mirror and the angle of above-mentioned the 2nd imaginary line.
8. image processing system according to claim 4 is characterized in that:
The angle of above-mentioned the 1st optical box and above-mentioned the 2nd optical box equals the angle of above-mentioned the 1st imaginary line and above-mentioned the 2nd imaginary line.
9. image processing system according to claim 1 is characterized in that:
The light path shape of above-mentioned the 1st～the 4th laser is all roughly the same.
10. image processing system according to claim 1 is characterized in that:
Form 4 the used optical element of optical system of the light path of above-mentioned the 1st～the 4th laser, all roughly the same on the optics in 4 systems.
11. image processing system according to claim 1 is characterized in that:
The rotation center of above-mentioned the 1st～the 3rd photoreceptor is arranged in a straight line, and the rotation center of above-mentioned the 4th photoreceptor breaks away from from this straight line.
12. an image processing system comprises:
Penetrate the 1st laser scan unit of the 1st and the 2nd laser, have the 1st light source that above-mentioned the 1st laser takes place, the 2nd light source that above-mentioned the 2nd laser takes place and the 1st rotating mirror of the above-mentioned the 1st and the 2nd laser deflection that will take place from the above-mentioned the 1st and the 2nd light source;
Penetrate the 2nd laser scan unit of the 3rd and the 4th laser, have the 3rd light source that above-mentioned the 3rd laser takes place, the 4th light source that above-mentioned the 4th laser takes place and the 2nd rotating mirror of the above-mentioned the 3rd and the 4th laser deflection that will take place from the above-mentioned the 3rd and the 4th light source;
The 1st photoreceptor is by above-mentioned the 1st laser radiation;
The 2nd photoreceptor is by above-mentioned the 2nd laser radiation;
The 3rd photoreceptor is by above-mentioned the 3rd laser radiation; And
The 4th photoreceptor is by above-mentioned the 4th laser radiation;
Above-mentioned image processing system is characterised in that:
The light path shape of the light path shape of above-mentioned the 3rd laser from above-mentioned the 3rd light source to above-mentioned the 3rd photoreceptor and above-mentioned the 2nd laser from above-mentioned the 2nd light source to above-mentioned the 2nd photoreceptor is roughly the same;
The light path shape of the light path shape of above-mentioned the 4th laser from above-mentioned the 4th light source to above-mentioned the 4th photoreceptor and above-mentioned the 1st laser from above-mentioned the 1st light source to above-mentioned the 1st photoreceptor is roughly the same; And,
The 2nd imaginary line that connects the rotation center of the rotation center of above-mentioned the 3rd photoreceptor and above-mentioned the 4th photoreceptor tilts with respect to the 1st imaginary line of the rotation center of rotation center that is connected above-mentioned the 1st photoreceptor and above-mentioned the 2nd photoreceptor, and the angle of the turning axle of above-mentioned the 2nd rotating mirror and above-mentioned the 2nd imaginary line equals the turning axle of above-mentioned the 1st rotating mirror and the angle of above-mentioned the 1st imaginary line.
13. an image processing system comprises:
Penetrate the 1st laser scan unit of the 1st and the 2nd laser, have the 1st light source that above-mentioned the 1st laser takes place, the 2nd light source that above-mentioned the 2nd laser takes place and the 1st rotating mirror of the above-mentioned the 1st and the 2nd laser deflection that will take place from the above-mentioned the 1st and the 2nd light source;
Penetrate the 2nd laser scan unit of the 3rd and the 4th laser, have the 3rd light source that above-mentioned the 3rd laser takes place, the 4th light source that above-mentioned the 4th laser takes place and the 2nd rotating mirror of the above-mentioned the 3rd and the 4th laser deflection that will take place from the above-mentioned the 3rd and the 4th light source;
The 1st photoreceptor is by above-mentioned the 1st laser radiation;
The 2nd photoreceptor is by above-mentioned the 2nd laser radiation;
The 3rd photoreceptor is by above-mentioned the 3rd laser radiation; And
The 4th photoreceptor is by above-mentioned the 4th laser radiation;
Above-mentioned image processing system is characterised in that:
The angle of above-mentioned the 1st laser scan unit and above-mentioned the 2nd laser scan unit equals to connect the angle of the 1st imaginary line and the 2nd imaginary line of the rotation center of rotation center that is connected above-mentioned the 3rd photoreceptor and above-mentioned the 4th photoreceptor of the rotation center of the rotation center of above-mentioned the 1st photoreceptor and above-mentioned the 2nd photoreceptor.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107860335A (en) * | 2017-11-10 | 2018-03-30 | 北京博清科技有限公司 | A kind of three-dimensional laser scanner applied to building trade actual measurement actual quantities |
| CN111522212A (en) * | 2019-02-05 | 2020-08-11 | 东芝泰格有限公司 | Image forming apparatus with a toner supply device |
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| WO1997012288A1 (en) * | 1995-09-29 | 1997-04-03 | Minnesota Mining And Manufacturing Company | Method and apparatus for producing a multi-colored image in an electrophotographic system |
| US5650253A (en) * | 1995-09-29 | 1997-07-22 | Minnesota Mining And Manufacturing Company | Method and apparatus having improved image transfer characteristics for producing an image on a receptor medium such as a plain paper |
| JP2001209234A (en) * | 2000-01-26 | 2001-08-03 | Ricoh Co Ltd | Color image forming device |
| JP2003159835A (en) * | 2001-11-27 | 2003-06-03 | Seiko Epson Corp | Imaging apparatus |
| JP2003211728A (en) * | 2002-01-25 | 2003-07-29 | Fuji Xerox Co Ltd | Imaging apparatus |
| KR100467595B1 (en) * | 2002-07-24 | 2005-01-24 | 삼성전자주식회사 | Multi-pass type color image forming apparatus and method |
| JP3974565B2 (en) * | 2002-09-16 | 2007-09-12 | 三星電子株式会社 | Optical scanning unit of electrophotographic image forming apparatus and electrophotographic image forming apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107860335A (en) * | 2017-11-10 | 2018-03-30 | 北京博清科技有限公司 | A kind of three-dimensional laser scanner applied to building trade actual measurement actual quantities |
| CN111522212A (en) * | 2019-02-05 | 2020-08-11 | 东芝泰格有限公司 | Image forming apparatus with a toner supply device |
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